News tagged with weak equivalence principle
Proposed test of weak equivalence principle could be most accurate yet
(PhysOrg.com) -- The weak equivalence principle (WEP) - which states that all bodies fall at the same rate in a gravitational field, regardless of structure or composition - is one of the key postulates of ...
May 03, 2010 |
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Does weak equivalence break down at the quantum level?
(PhysOrg.com) -- One of the givens in physics is the weak equivalence principle. This principle has been considered solid since Einstein proposed that it is not possible to detect the difference between uniform acceleration ...
Dec 08, 2009 |
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Search results for weak equivalence principle
Bismuth-based semiconducting material could enable control of electron spin
In the developing field of spintronics, physicists are designing devices to transmit data using the inherent axial rotation, or spin, of electrons rather than their charge as is used in electronics. Weak coupling ...
Oct 14, 2011 |
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The conditional Homo cooperativus
A postdoc from ETH Zurich has been conducting research to find solutions to cooperation dilemmas. His recent field research in the Bale Mountains of Ethiopia reveals that the degree of voluntary cooperation ...
Other Sciences / Social Sciences
Nov 17, 2010 |
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Variations in fine-structure constant suggest laws of physics not the same everywhere
(PhysOrg.com) -- One of the most controversial questions in cosmology is why the fundamental constants of nature seem fine-tuned for life. One of these fundamental constants is the fine-structure constant, ...
Sep 06, 2010 |
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Sound creates light: German researchers transfer ultra-stable frequency across a 480-km-long optical fiber link
German researchers at the Physikalisch-Technische Bundesanstalt have found an elegant solution to transmit an optical frequency with extreme precision: they employ fiber Brillouin amplification. The new method ...
Jun 23, 2010 |
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New Amplifier Pushes the Boundary of Quantum Physics
(PhysOrg.com) -- If powerful new quantum computers are to reach their enormous potential, they will need amplifiers capable of transmitting signals so weak they consist of a single photon. In the May 6 edition ...
May 05, 2010 |
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Climate: Copenhagen pledges set Earth for +3 C warming - study
Carbon-curbing pledges under the Copenhagen Accord are likely to doom Earth to warming of three degrees Celsius (5.4 degrees Fahrenheit) or more, compared to the deal's target of 2 C (3.6 F), scientists said ...
Apr 21, 2010 |
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A new way to measure muscle
(PhysOrg.com) -- Shortly after taking a faculty position at MIT, Joel Dawson '96, SM '97 got together with his former music teacher, Elena Ruehr, for coffee. Ruehr, an MIT lecturer in music and theater arts, ...
Medicine & Health / Medical research
Oct 28, 2009 |
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Medical ethics experts identify, address key issues in H1N1 pandemic
The anticipated onset of a second wave of the H1N1 influenza pandemic could present a host of thorny medical ethics issues best considered well in advance, according to the University of Toronto Joint Centre for Bioethics, ...
Medicine & Health / Diseases, Conditions, Syndromes
Sep 23, 2009 |
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New-School 'Aether' May Shed Light on Neutron Stars
Among scientists, it is widely believed that there is no such thing as an aether – a medium pervading all space that allows light waves to propagate, similar to how sound needs air or water – but a part of its spirit may ...
Oct 10, 2007 |
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Testing the Equivalence Principle
Standing on the Moon in 1971, Apollo 15 astronaut Dave Scott held his hands out at shoulder height, a hammer in one hand and a feather in the other. And as the world looked on via live television, he let go.
May 21, 2007 |
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List of search results for weak equivalence principle
